2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
已閱讀1頁,還剩21頁未讀, 繼續(xù)免費閱讀

下載本文檔

版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請進行舉報或認(rèn)領(lǐng)

文檔簡介

1、<p>  Mechanical Technology in the rubber industry outlined in the application</p><p>  In the development of human society is the modern process. Rubber Industries is an indispensable Economy, Trade an

2、d Industry. In the rubber industry in the development of rubber technology and rubber machinery (or electromechanical) to the progress and development of technology played an important role in promoting this. The develop

3、ment of rubber industry, rubber and rubber machinery industry technology constitutes of technical rubber products all the technical process and industrial technology </p><p>  Since 1839. A series of rubber

4、machinery and equipment will come out, in addition to the application of vulcanized rubber vulcanization facilities, and other rubber machinery, such as plunger hose extrusion machine (1858), screw extruder (1879), rubbe

5、r rolling mill (1843 ~ 1900), Closed rubber mixing machine (1916) rubber machinery and equipment. At that time, has spent the rubber industry production process, the promotion of the development of rubber industry has pl

6、ayed a facilitating role.1904</p><p>  Is a highly flexible rubber typical materials, its physical properties are very complicated. Most of the processing of rubber molding process are similar to the melt fl

7、ow and deformation process, but also in the processing of rubber products, the Health and plastic to go through plastic necklace, mixing, pressure-type, shape, curing process procedures, in order to become products. In t

8、he modern chemical products, such as rubber, plastics, paints, fibers, lubricants, ceramics, and other similar m</p><p>  In the course of processing molding viscous flow state, in the vulcanized only basic

9、treatment before losing mobility, and a high flexibility based elastic material.</p><p>  Because of the late 19th century and early 20th century, the theory of rubber is exploration and the principles of th

10、e invention. Especially theology and application of the theoretical study of the development of rubber industry makes, whether in the filler, vulcanization accelerator, or in the process principle aspects have undergone

11、profound changes. On the development of the rubber industry is a qualitative change. At the same time, all kinds of rubber machinery also made great progress and d</p><p>  Compound rubber machinery industry

12、 is one of the basic equipment. At present production machinery to open dozens of rubber mixing. Health glue used plastic necklace, plastic material mixing; pressed for the compression machine for plastic, decorticating

13、machine compound mainly used for preheating and plastic; crusher for crushing such as natural rubber, remove plastic washing machine for Health and plastic waste compound impurities; mill mainly used for waste plastic bl

14、ock grinding; refining mac</p><p>  Rubber rolling mill, which is rubber products processing in the process of one of the basic equipment. Since 1843 three-roll calendar application, we have 160 years of dev

15、elopment history. From the modern to modern specifications and various new calendar will continue to emerge, its specifications, speed, semi product of high accuracy, a high degree of automation machinery, the machinery

16、has become the modern calendar of the main structural features. At present production largest calendar has re</p><p>  The Closed Compound (mixer), rubber and plastic mixing refining is one of the main equip

17、ment. The development of modern mixer, a high-speed, high-pressure and high-performance characteristics, and is divided into low-speed (20 to the rotor speed / min), the velocity (speed of 30 to 40 ~ / min) and high-spee

18、d (60 to speed / min) 3. In recent years also appear to speed in the 80 / mixer at high speed over armed</p><p>  Rubber extruder (screw extruder), the world's first since 1879-screw extruder Since the b

19、irth of all kinds of screw extruder machinery in a large number of different varieties have been supporting complete specification has been adapted to different product performance characteristics of the request. If pres

20、sure extrusion machine, mainly for the shape of the semi-finished production; filter plastic extrusion machine for removing plastic mix and the Health and the impurity; plastic extrusion mach</p><p>  Tire r

21、ubber industry is the largest number one product. Whether raw materials from the use of rubber and rubber products, put out of rubber products which occupy the lion's share of the market, consume about 80% of the vol

22、ume of rubber resources. Therefore, the tire molding machinery is also important. Since the invention of pneumatic tire in 1888, with the development of the automobile industry, various specifications, the various proper

23、ties of a large number of rubber tires. A high-performance</p><p>  Tire molding machine many of the types, according to the method of forming: sleeve-law and two kinds of stickers; by shaping the contours o

24、f the drum: drum, semi-drum, and the core-wheeled four-wheel-core. In addition, all other uses of different shapes and rubber products, there is a basic molding process. Therefore a variety of rubber molding machines and

25、 even offers a dazzling. Only a wide variety of ring is tens of thousands of species on the number. This shows that the rubber molding machin</p><p>  Vulcanization machinery, a variety of rubber products of

26、 the final steps in the processing machinery, mainly for the various rubber products, plastic, rubber products, such as sulfide processing. The main structure of three kinds of forms: one is flat vulcanize, and the autoc

27、lave (including pressure autoclave) and the drum machine sulfide. Flat-curing the use of broader is more variety. In addition to direct use of vulcanized rubber products processing, can also be used in the plastics indus

28、try </p><p>  For the development of rubber industry, mechanical and process technology research determines its speed and level of development determines the performance and quality of products. Generally sp

29、eaking, industrial technology research and product cycle faster some frequency. Changes in technology and machinery cycle is slow, it decided to change the cycle of the life of the equipment, work efficiency and product

30、quality. It is precisely because of machinery and equipment has a clear life, it makes </p><p>  Or the rubber industry development, which is not only the normal process of production is rubber products. Mec

31、hanical technology and the increasing need in-depth study of technology and joint development of modern commodity market competitive situation also not tolerate such people wait wait-and-see or delay time, and in additio

32、n to the sustenance of mankind growing material and cultural wealth, the need for rapid development of the rubber industry, large piles of scrap rubber, people also need </p><p>  Machinery, physics, chemist

33、ry (or chemical), the four basic skills of a development of the human society science technology system, and science and technology system known as compulsory, and social management technology is soft science and technol

34、ogy system. Taken Flex became a more complete scientific and technological system. Rubber industry in the development of rubber industry and technology and scientific management technology industries with the economic st

35、ructure of the industry is relate</p><p>  In the mechanical technology of the technical attributes of both tangible and intangible. All of investigation and study, the work of design techniques are soft att

36、ributes that in the manufacturing of construction involves the technical attributes of hardware technology, the results of pre-main soft technology embodied in the design and construction drawings and manuals; after a ha

37、rd stage technical achievements on various material on the output of products. This is a hard and soft technology in</p><p>  機械技術(shù)在橡膠工業(yè)中的應(yīng)用概述</p><p>  在人類社會發(fā)展的現(xiàn)代進程中.橡膠工業(yè)也是一門不可缺少的經(jīng)濟產(chǎn)業(yè)。而在橡膠工業(yè)發(fā)展過程中

38、,橡膠工藝及橡膠機械(或機電)技術(shù)的進步和發(fā)展起了重要的推動作用。橡膠工業(yè)的發(fā)展,橡膠工業(yè)技術(shù)及橡膠機械技術(shù)構(gòu)成了橡膠制品的全部技術(shù)過程和產(chǎn)業(yè)技術(shù)體系。1820年英國制成了由人力驅(qū)動的單輥式煉膠機。1826年雙輥筒式的開放式煉膠機投入生產(chǎn),拉開了人類橡膠機械生產(chǎn)的序幕。至今,人類社會橡膠機械的應(yīng)用已有180多年的歷史了。</p><p>  1839年以來.一系列的橡膠機械設(shè)備陸續(xù)問世,除適應(yīng)橡膠硫化技術(shù)應(yīng)用的硫

39、化設(shè)備外,其他橡膠機械,如柱塞式膠管擠出機(1858年),螺桿擠出機(1879年),橡膠壓延機(1843~1900年),密閉式煉膠機(1916年)。等橡膠機械設(shè)備。先后投入當(dāng)時的橡膠工業(yè)生產(chǎn)過程,對推動橡膠工業(yè)的發(fā)展起了一定的促進作用。</p><p>  1904年,氧化鉛、氧化鎂等無機硫化劑的發(fā)現(xiàn),特別是1919年有機硫化促進劑D、M的發(fā)現(xiàn)和應(yīng)用,進一步促進了生產(chǎn)效率的提高,大大改善了橡膠制品的使用性能,擴大

40、了使用范圍。1920年把炭黑加入橡膠中,才使得橡膠制品的性能得以全面改善和提高。因此,炭黑的應(yīng)用又促進了橡膠工業(yè)進步和全面發(fā)展。20世紀(jì)初及中葉,蘇聯(lián)、美國、英國、德國、法國等國家,先后發(fā)明了合成橡膠工業(yè)技術(shù)。并建立了一系列橡膠合成生產(chǎn)裝置及工廠。再加上東南亞地區(qū)的天然橡膠資源生產(chǎn)的規(guī)?;瑸槿祟惉F(xiàn)代橡膠工業(yè)的全面發(fā)展開辟了物質(zhì)資源基礎(chǔ)。</p><p>  橡膠是一種高彈性的典型材料,其物理性能十分復(fù)雜。大多數(shù)

41、橡膠的加工成型過程都有近似熔體的流動和變形過程,而且在橡膠產(chǎn)品的加工過程中,生膠要經(jīng)過塑煉、混煉、壓型、成型、硫化的工藝程序,才能成為產(chǎn)品。在現(xiàn)代化工產(chǎn)品中,諸如橡膠、塑料、油漆、纖維、潤滑油、陶瓷等一類材料的生產(chǎn)及工程技術(shù)的應(yīng)用,對其材料的復(fù)雜力學(xué)性質(zhì).依據(jù)單純的彈性力學(xué)、粘性理論或塑性理論都不能滿足這些材料加工過程的形變要求。于是一種基于對復(fù)雜介質(zhì)力學(xué)性質(zhì)的研究課題——流變學(xué)理論便提到了人類新學(xué)科研究的議事日程。1928年,美國成立

42、了“流變學(xué)會”,1940年,英國成立了流變學(xué)俱樂部(后改為流變學(xué)會)。此外,荷蘭、西德、法國、日本等國家也相應(yīng)成立了流變學(xué)會。1948年召開了國際流變學(xué)會。1953年成立了國際流變協(xié)會。從此一門涉及到應(yīng)用數(shù)學(xué)、物理學(xué)、彈性力學(xué)、材料力學(xué)、流體力學(xué)、地質(zhì)學(xué)、工程學(xué)及其他學(xué)科的邊緣學(xué)科——流變學(xué)應(yīng)運而生,并逐漸得到廣泛應(yīng)用。流變學(xué)不僅在橡膠、塑料、涂料、印刷、硅酸鹽、食品等工業(yè)生產(chǎn)中得到廣泛應(yīng)用,還涉及到基本建設(shè)、機械、運輸、水利、化學(xué)工業(yè)

43、等眾多工業(yè)部門:涉及到許多物質(zhì)從固體到液體的變化過程。流變學(xué)在橡膠</p><p>  煉膠機械是橡膠工業(yè)的基本設(shè)備之一。目前生產(chǎn)的開放式煉膠機械達數(shù)十種。主要用于生膠的塑煉,膠料的混煉;壓片機用于壓片、供膠;熱煉機主要用于膠料預(yù)熱和供膠;破碎機用于天然橡膠的破碎等,洗膠機用于除去生膠和廢膠中的雜質(zhì);粉碎機主要用于廢膠塊的粉碎;精煉機主要用于除去再生膠中的硬雜質(zhì);再生膠混煉機,主要用于再生膠的捏煉;煙膠壓片機用于

44、煙膠片壓片等;縐片壓片機,主要用于縐片壓片工作;實驗用煉膠機,主要用于各種少量膠料的實驗工作等。</p><p>  橡膠壓延機,也是橡膠制品加工過程中的基本設(shè)備之一。自1843年三輥壓延機應(yīng)用以來,已有160多年的發(fā)展歷史了。從近代到現(xiàn)代各種不同規(guī)格和新型的壓延機不斷涌現(xiàn),其規(guī)格大、速度快、半制品精度高、機器自動化程度高,已成為現(xiàn)代壓延機械的主要結(jié)構(gòu)特征。目前生產(chǎn)的壓延機最大規(guī)模已達到φ1055×30

45、00毫米以上,輥筒線速度高達120米/分以上,壓延的半成品其厚度誤差已達到±0.0025毫米以內(nèi)。并達到采用電子計算機和全程控制的自動化水平。密閉式煉膠機(簡稱密煉機),是橡膠的塑煉和混煉的主要設(shè)備之一。現(xiàn)代密煉機的發(fā)展,具有高速、高壓和高效能的特點,并分為低速(轉(zhuǎn)子轉(zhuǎn)速為20轉(zhuǎn)/分)、中速(轉(zhuǎn)速為30~40轉(zhuǎn)/分)和高速(轉(zhuǎn)速為60轉(zhuǎn)/分)3種。近年來還出現(xiàn)轉(zhuǎn)速在80轉(zhuǎn)/分以上的高速密煉機械。</p><

46、p>  橡膠擠出機(螺桿擠出機),自1879年世界第一臺螺桿擠出機誕生以來,各種形式的螺桿擠出機械大量出現(xiàn),不同規(guī)格品種已配套齊全,已適應(yīng)不同產(chǎn)品性能特點的要求。如壓型擠出機,主要用于各種斷面形狀的半成品生產(chǎn);濾膠擠出機,用于除去混煉膠和生膠中的雜質(zhì);塑煉擠出機,用于生膠的連續(xù)塑煉:造粒擠出機,用于膠料和生膠的造粒;壓片擠出機.用于膠料的壓片;脫硫擠出機用于再生膠的脫硫:擠壓脫水?dāng)D出機用于合成膠和再生膠的脫水干燥:電纜擠出機,用于

47、電纜的包覆成型;排氣擠出機.用于排出混入膠料中的空氣和水分及低分子揮發(fā)物等。這些規(guī)格齊全的擠出機械,對橡膠工業(yè)的發(fā)展立下了汗馬功勞。成為各種橡膠制品加工的動力和優(yōu)選設(shè)備之一。注射成型機,又稱為注壓機,主要用于生產(chǎn)各種橡膠模壓制品。注壓機械,按其結(jié)構(gòu)形式,又分為臥式注壓機、立式注壓機、角式注機及多工位注壓機4種。每種注壓機又分為許多大小不同的規(guī)格品種。</p><p>  輪胎是橡膠工業(yè)最為龐大的頭號產(chǎn)品。無論從橡

48、膠原料的使用量和橡膠產(chǎn)品的生產(chǎn)量來看它都占據(jù)橡膠制品市場的大部分份額,消耗約80%的橡膠資源量。因此,輪胎成型機械也十分重要。自1888年發(fā)明充氣輪胎后,隨著汽車工業(yè)的發(fā)展,各種規(guī)格、各種性能的橡膠輪胎大量涌現(xiàn)。一輛高性能、高質(zhì)量的汽車,要是沒有相應(yīng)性能和質(zhì)量的輪胎支撐,就等于廢鐵一般。而輪胎工業(yè)的發(fā)展輪胎的成型機械參與也是至關(guān)重要的。無論是內(nèi)胎或外胎它們都需要有一定的成型機械模具來定型。特別是外胎的成型,是輪胎生產(chǎn)過程中的核心工序,是

49、外胎各種“零部件”的組裝過程,即將簾布、鋼絲圈、包布、胎面等各種部件組合貼合加工成輪胎胎胚。故輪胎成型機械在很大程度上決定著輪胎的性能和質(zhì)量。隨著人類社會經(jīng)濟文化的進步和發(fā)展,各式各樣的車輛大量涌現(xiàn)。因而各種類型和規(guī)格性能的輪胎也層出不窮.諸如小轎車、客車、貨車、工程車和其他各種專用車輛及飛機等,都有自己的專用輪胎品種和規(guī)格。近年來又出現(xiàn)高強度和高耐磨性能的鋼絲骨架子午胎,使得汽車輪胎的結(jié)構(gòu)性能及質(zhì)量又上了一個新臺階。這都不斷給輪胎成型

50、機械提出了更高的要求。</p><p>  輪胎成型機的種類很多,按成型方法分有:套筒法和層貼法2種;按成型鼓的輪廓分有:鼓式、半鼓式、芯輪式和半芯輪式4種。此外,其他所有不同形狀及用途的橡膠制品,基本都有一個成型的過程。因此各種各樣的橡膠制品成型機具更是千姿百態(tài)和琳瑯滿目。僅各式各樣的密封圈品種就達數(shù)萬種之多。可見橡膠工業(yè)的成型機械也是十分繁雜和極為重要的。</p><p>  硫化機械

51、,是各種橡膠制品的最后一道工序的加工機械,主要用于各種橡膠制品、膠帶、膠板等制品的硫化加工。其主要結(jié)構(gòu)有3種形式:一種是平板硫化機,另外是硫化罐(包括水壓硫化罐)和鼓式硫化機。平板硫化機的使用范圍較廣,種類也多。除直接用于橡膠制品的硫化加工外,還可用于塑料工業(yè)中的熱固性塑料或熱塑性塑料的壓制加工。因為他們的工作原理和機體結(jié)構(gòu)都基本相同。其種類及形態(tài)繁多。按用途來分,大體有橡膠模型制品平板硫化機、平帶平板硫化機、三角帶平板硫化機、膠板平板

52、硫化機等。硫化罐是橡膠制品生產(chǎn)中應(yīng)用最早的硫化設(shè)備之一,主要用于橡膠制品硫化工作。硫化罐還可用來硫化鞋底、涂膠膠布及模型制品等。故有“萬能”硫化機之稱。鼓式硫化機,有“平帶”和“三角帶”兩大類。主要用來硫化表面形狀和表面質(zhì)量有特殊要求的薄型橡膠板帶制品,如花紋膠板、印刷膠板及印染導(dǎo)帶等。若配上必要的配件裝置,還可用于硫化運輸帶、傳動帶及其他類似橡膠制品的硫化加工。鼓式硫化機可連續(xù)硫化,容易實現(xiàn)自動化和形成流水作業(yè)生產(chǎn)線。大大減輕勞動強度

53、,提高工效和產(chǎn)品質(zhì)量。 對于橡膠工業(yè)的發(fā)展,機械技術(shù)及工藝研究決定著其發(fā)展速度和水平,決定著產(chǎn)品的性能和質(zhì)量。一</p><p>  機械、物理、化學(xué)(或化工)、生物4項基本技術(shù)構(gòu)成了人類社會發(fā)展的自然科學(xué)技術(shù)體系,并稱為硬性科學(xué)技術(shù)體系,而社會管理技術(shù)則是軟性科學(xué)技術(shù)體系。兩者軟硬結(jié)合成為一種較為完整的科學(xué)技術(shù)體系。橡膠工業(yè)的發(fā)展也與橡膠產(chǎn)業(yè)技術(shù)與產(chǎn)業(yè)科學(xué)管理技術(shù)相結(jié)合的產(chǎn)業(yè)經(jīng)濟結(jié)構(gòu)形態(tài)相關(guān)是體現(xiàn)橡膠工業(yè)發(fā)展“

54、軟硬兼施”的科學(xué)措施。機械技術(shù)是屬于硬屬性技術(shù),工藝技術(shù)是屬于軟屬性技術(shù),這是一種“軟硬兼施”的技術(shù)形態(tài)。</p><p>  在機械技術(shù)中又有軟硬屬性技術(shù)之分。凡是屬于調(diào)查研究、設(shè)計技術(shù)方法的工作,都是軟屬性技術(shù);凡是涉及施工制造方面的技術(shù)屬于硬屬性技術(shù),前期軟性技術(shù)的成果主要體現(xiàn)在設(shè)計施工圖紙及其說明書上;后一階段的硬性技術(shù)成果集中在各種物質(zhì)產(chǎn)品的產(chǎn)出上。這也是一個軟硬技術(shù)轉(zhuǎn)化成果的客觀過程。橡膠工業(yè)的發(fā)展,

溫馨提示

  • 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
  • 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
  • 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會有圖紙預(yù)覽,若沒有圖紙預(yù)覽就沒有圖紙。
  • 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
  • 5. 眾賞文庫僅提供信息存儲空間,僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護處理,對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對任何下載內(nèi)容負(fù)責(zé)。
  • 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容,請與我們聯(lián)系,我們立即糾正。
  • 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時也不承擔(dān)用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。

評論

0/150

提交評論